Well tool control



2 Sheets-Sheet l W @wm W. C. ERWIN ET AL WELL TOOL CONTROL Filed April 22, 1953 Nov. 3, 1936.

Zyff'gjf VV Il w. c. ERWIN ET AL WELL TOOL CONTROL Nov. 3, 1936.

Filed April 22,` 1933 2 sheets-sheet 2 M pau l Patented Nov. 3, 1936 UNITED STATES 05ans WELL TQOL CONTROL Weldon C. Erwin and Cecil H.' Sweet, Brea, Calif., assignors to John Grant, Los Angeles, Calif.

Application April 22, 1933, Serial No. 667,438

all Claims. (Cl. 16S-19) For example, tools employed in various shing,

cutting, hailing, cleaning, and like operations are commonly provided with control devices frequently referred to in the fields as tailpieces. The present invention provides a control applicable generally to Well tools of the general'type referred to, and particularly useful and practical as applied to bailers and/orwell cleaners such as we set forth and claim in our copending application entitled- Well tool, filed December 20, 1932, Serial No. 648,072, as will more particularly be pointed out later. It is to be understood that our present `invention is concerned primarily with a control applicable generally to well tools, and that the present reference to particular well tools is not to be construed as limiting the scope or range of use of the invention. It is a primary object of the present invention to provide a well tool control that is dependable in controlling the well tool, and holding it against operation until the operator deliberately operates the tool or control to release it for operation. In the case of many control devices heretofore proposed and used, accidental tripping or operation occurs in the course of running the structure into a well. With the control provided by our present invention the tool to which the control is connected can be lowered into the well rapidly, and without the exercise of great care, as the control is not subject to accidental tripping or operation as are ordinary devices of this character.

It is another object of tl.is' invention to provide a control having the characteristics above mentioned which can be dependably released or put into operation at the will of the operator, it being a feature of the invention that the control is operable by a simple lifting or upward movement of the tool when it has reached the desired point in the well. The control of the present invention includes a well engaging element establishing re-l sistance between the tool and the well or well casing. However, the construction provided by the present invention is.such that a slight hangingv up or retarding of the tool in the course .of its being lowered into the well will not trip or release the control, it being necessary for the operator to distinctly or denitely lift or move the tool upwardly in order to effect operation.

Another object of the present invention is to provide a simple, practical and effective combination and assembly of parts in a device of the character mentioned. The structure of the present invention is simple and inexpensive of manuiacture, and is free of complicated or delicate parts.

The various objects and features of the present invention will be best and more fully understood from the following detailed description of a typical form and application of the invention throughout which description reference is had to the accompanying drawings, in which:

Fig. l is a longitudinal detailed sectional view of the upper portion of an assemblyincluding a well cleaner and a control embodying the present invention. Fig. 2 is a longitudinal detailed sec tional view of the lower portion of the assembly. Fig. 3 is an enlarged detailed transverse sectional view taken through the control mechanism on line 3 3 on Fig. 2, and Fig. 4 is a side elevation of a portion of the control, beingk a View taken as indicated by line -d on Fig. 3.

For the purpose of illustrating a typical application of the control provided byl our invention, we have disclosed it applied to or in combination .with a Well cleaning tool or device, as such device presents a construction and operating condition well suited to making clear the nature and mode of operation of lthe device of our invention. In setting forth the controlin combination with a well cleaner, certain featuresof construction and formation of parts are presented which make the construction suited to'a well cleaner, and which may vary inv detail and features of design in applying the control to a well tool of device other than a cleaner. v

The wellcleaner illustrated in the drawings includes generally a tubular body I0, a cap or head section ll closing, the upper end of the body l0, and providing means for connecting the tool with lowering and raising member l2, a closure section I3 at the lower end of the body, a check valve M at the lower end portion of the body, and various other parts and features of construction incidental to those mentioned.

The tubular body lll corresponds generally toA the tubular body of a well cleaner or bailer, and is therefore an element of considerable length, and may in practice be formed of several parts or sections suitably joined.

The cap Il acts as a closure for the upper end of the material receiving chamber in body Il), and in the particular construction illustrated is in the nature of a plugscrew threaded into the upper end of the body I0 and provided at its upper end with a tapered pin I5 adapted to receive the member I2. It is to be understood that the"y member I2 may be any suitable member end of the body I0, and includes a tubular part` I8 attached to the lower section of the body I0 to form an extension or continuation thereof. A closure member in the form of a closure disc I9 is provided in the opening 20 formed through the part' I8, and acts to close the 'lower end of the cleaner against the ,admission of fluid. The closure disc I9 is formed of fragile material such as glass, bakelite, or other material or composition adapted to be broken by a punch or the like.

'Ihe check valve I4 is located in the lower portion of the body I0 to cooperate with a. seat 2I in the lower section of the body I0. Check valve Il illustrated is in the form of a ball valve operable to allow free ow of uid upwardly into the body I0 and to check discharge of fluid from the lower end of the b`ody I0. A dischargefor unloading .opening 22 is provided irl one side of the body I0 immediately above the valve I4.

The opening 22 is provided with a removable clo- Y sure 23 adapted to be removed when it is desired to unload the device.

The parts thus far describedI constitute the.'

essential or principal parts characteristic of a well bailer and are more fully set forth and claimed in our copendlng application Serial #667,439-W`e1l bailer, filed April 22, 1933, and wherein the showing of corresponding parts is substantially the same as in this application. The structure to which the control of this invention is applied is made particularly useful as a well cleaner operable to clean perforations in a well casingC, or the like, by the use of a packer 25 arranged in combination with parts thus far described. In the particular arrangement illustrated Vthe packer 25 operates to pack between the' casing C and the assembly formed by the parts above described and the control of the present invention. In the particular arrangement illustrated the packer is not applied directly to the parts thus far described, but is carried by a part which'will be hereinafterdescribed as a part of the control of the present invention. It will be apparent, however, that the packer 25 is primarily an element of the cleaner, and the portion of the control device hereinafter described which carries the packer may, for the purpose mentioned, be considered a part or extension of4 the parts that we have described. i

In our copendlng application Serial #648,0'72, mentioned in the fore-part of this specification, we have shown and broadly claimed an arrangement wherein releasable means are adaptedto hold the inlet opening means against operation,

and a control for the holding means'including a member mounted for movement with respect to the holding means and normally maintaining the holding means operative, together with an element associated with the member for engaging nthe well pipe to resist movement relative thereto whereby the cleaner may be moved to release the holding means. We have also shown and claimed a spring associated with such mechanism and operable to open the closure when the holding means is released. In that application, the holding means is illustrated as embodying latches mounted on the closure-opening means, which are normally maintained in holding position by a control member entered between the latches, and movable from between the latches by reason of withdrawal movement of the cleaner,

,the control member having a portion which frictionally engages the well pipe to bring about this result. l

. The control device provided by the present invention includes, generally, a body A, an operating member B, means F for operating member B, holding means D in connection with the operating member, and releasing means E for the holding means. The body A is adaptable to be attached to the cleaner or tool to be controlled, b'eing in the nature of an extension or continuation of the body II). Body A may therefore broadly be considered as a part of body III. The operating member operatively connects the control and the tool or device to be controlled.

In the present case the member B relates the control with the closure disc I9. The holding means D is` related-to the `operating member B and acts to normallyhold the member B in a retracted or inoperative position. 'I'he releasing means E is operable to release 'the means D and the memberIB.

'I'he body A of the control connects with or is applied to the body I0 of the cleaner to be rigid therewith. In the construction illustrated, the control isv located below the cleaner, the upper end of the body A of the control being screw threaded to the part I8 ofthe cleaner which connects to the lower body sectionl I0, and. carries the closure disc I9. The body A forms a mounting or carrier for the other parts of the control, and in the preferred form of the invention it is tubular and of considerable length.

The packer 25, which may be considered an element of the cleaner controlled by the mechanism now being described, 'is shown located on the upper end portion of the body A. 'I'he packer is shown carried between an upwardly facing shoulder 26 on the body A and a collar 21 threaded Von the body A' immediately below its point of connection with thev part I8. The particular packer illustrated includes a body 21* of rubber or the like, shaped to normally bear outwardly against the inner wall of the casing C; which packing is protected by suitable guard elements 28 in the manner common to devices of this character. i

A feature of the body structure is the provision of means for circulating fluid from the space between the body I0 and the casing above the packer 25 to the lower end of the control. The construction provided includes circulationV ducts or tubes 30 which communicate with openings 3l through the wall of the body A above the packer 25, and extend downwardly throughthe body, and communicate with. openings 32 provided in the plug 33, which closes the lower end of the body A. In .the preferred construction there are two tubes 30 located diametrically opposite each other, and arranged closel to the inner wall of the body A as'clearly illustrated in Figs. 2 and 3 of the drawings.

r The operating member B, in accordance lwith the broader principles of the invention, will vary depending upon other features of. construction, and particularly with the device to be controlled by the structure of the present invention. In the case illustrated the operating member B is in the form of a rod 34 arranged longitudinally in the body A and provided at its upper end with a punch 35 adapted to engage and rupture the sealing disc I9. The rod 34 is located centrally in the bodyA, where there is no interference with the tubes 30. The punch 35 provided on the upper end of the rod 34 has an enlarged part- 36 fitting more or less closely in the body A to guide the punch and the upper end of the rod. The disc engaging portion 31 of the punch is in the form of a tubular extension provided at its upper end with disc breaking parts or teeth 38. Ports 33 connect with the interior of `the punch portion 3l, and extend downwardly through the enlarged part 36 to provide free communication between the space in the body A below the enlargement 36 and the opening 2li. Further, ports 4i] are provided through the enlarged part 36 extending from the upper side of the part 3G outside of the part 3l to the underside of the part 3.6 as clearly shown in Fig. l of the drawings.'

The control includes means F for operating or moving the rod 34 upwardly in the body A so that the punch engages and ruptures the sealing disc i9. In the form of the invention illustrated this rod operating means means normally tending tol urge or operate the rod upwardly in the body. We have illustrated a helical spring 32 arranged around the rod34 between the lower end of the punch 35 and an abutment 92 in the body A. The abutment 92' supporting the lower 4end of the spring 32 is formed by the upper end portions of the circulation tubes 30 provided in the body as hereinabove described.

The holding means D operates to releasably hold the rod 34 in a retracted or down position, such as is shown in the several figures of the drawings. The means D is releasable to allow the rod 34 to operate vertically so that the punch 35 engages and ruptures the closure disc I9. In the form illustrated in the drawings the means D includes arms 43 projecting laterally from the rod 34 into openings in the body A. We have disclosed two oppositely disposed arms 43 projecting laterally from the lower end portion of the rod 34 into oppositely disposedopenings .in

the body A. The openings in the body A are in the nature of slots formed through the wall body,

each slot having a vertical or longitudinal portion 44 and a transverse or lateral portion 45 joining the lower' end of the vertical portion. The arms 43 cooperate with the openings in the body so that the rod 34to which the arms are connected, isfree to move vertically relative to the body A when the arms are in the vertical portions 44 of the openings, but is held against longitudinal movement relative to the body when the arms are located in the .lateral portions 45 of the openings as shown throughout the drawings. It will be apparent from the drawings that the arms are free to operate or move into and out of the lateral portions 45 of the openings.

To facilitate free movement or operations of the arms 43 in the openings of. the body, we

prefer to provide the arms with rollers or beararms 45 mounted for free rotation on the the openings in the body to particular conis' preferably a spring struction illustrated in the drawings the arms 43A are connected to the lower end of the rod' 34 by means of a pin 47 which scre'w threads into a suitable socket in the lower end of the rod 34. The rollers 45 provided on the arms 43 are arranged' on the arms from their outer ends, and are retained in positions on the arms by retainingnutsv49.

The releasing means E provided by the present invention operates to move the arms 43 from the lateral portions 45 of the slots to the vertical portions 44 thereof upon the tool or assembly, being operatedin a predetermined manner in the well or well casing C. generally, a part 5U shiftable relative to the body, and having cooperative engagement with the arms 43 and well engaging means, such as gripping parts 5l, related ,to the part 53 'to shift or operate it relative to the body when the tool is manipulated in a predetermined manner.

The part 50 in the preferred form of the invention is-in the form of a sleeve slidably mounted on the body A. The sleeve 53 is mounted on the body forl limited longitudinal movement relative thereto, and is provided with diametric'ally opposite openings 52, which receive the end portions of the arms 43 which project beyond the body A. The sleeve 53 is limited to a certain amount of longitudinal movement relative to the body A by means of pins 54, which project from the body A into; longitudinal slots 55 provided in the sleeve 50, as clearly illustrated in Figs. 2 and 3 ofthe drawings. 5!) are pitched or inclined, providing spiral camshoulders 52a and 52h, shoulders 52a serving to operate the arms 43 transversely of the tool or through the lateral portions 45 of the openings in the body A to move the arms into the lateral portions 44 of the openings as the lsleeve is shiftedi a down or depressed portion. The sleevev 50 in being thus related to the arms 43 provides a means (shoulders 52a) by which the arms 43 may be operatedout of the lateral portions 45 of the body openings when the sleeve is operated through the gripping members 5l, which are hereinafter described, and at the same time (shoulders 52h) acts as a retainer or retarding means preventing accidental movement of the arms 43 out of the lateral portions 45 of the body openings. The upper portions 52e of slots 52 register with portions 44 and open to the upper en'd of the sleeve, permitting arms 43 to ride upwardly beyond the end ,of the sleeve when the arms are released for movement through said portions 44.

Gripping parts 5l are mounted toshift or move longitudinally lrelative to the body A., and are designed to grip orfractionally engage the well or well casing C. In the preferred form of the invention the gripping parts are in the form of leaf springs, having their ends attached to rings 66 and 6I slidable on the body A, and their middle portions bowed outwardly to bear against the inner wall of the casing C as clearly illustrated in- Fig. 2 of the drawings. The several springs orgripping parts 5l, together with the The means E includes,v

rings 60 and 6| forman assembly shiftable longitudinally'on the body A. The gripping parts 5| or the assembly just referred to, is related to the sleeve 5|lV so that the resistance established by the parts 5| causes thesleeve 50 to be moved relative to the body upon the body A, being moved upwardly in the casing C. In the particular construction illustrated the assembly, including the gripping parts 5|, .engages but is not directly connected to the sleeve 59. Through this arrangement an initial movement or shifting of the parts 5| relative to the body A occurs before the sleeve 50 is moved to operate the arms 43.

In accordance with the preferred form of the invention, we provide means for normally holding the assembly including the gripping parts 5|, in an up or elevated position onfthe body A as shown in Fig. 2. This means may include a spring linger or latch 'l0 projecting from one of the rings carrying the parts 5I to cooperate with an annular projection 1| on thebody A. The projection 1| may be in the form of a ring suitably located, and ilxed on the body A as shown in the drawings. The spring latch 10 cooperates with the projection so `that the assembly, including the parts 5|, is normally retained in an up position on the body, and does not shift or move downwardly relative to the body until the body A kis definitely moved upwardly relative to the casing C engaged by the gripping parts 5|. When the assembly, including the parts 5|, has shifted relatively to the body A to disengagev the latch, continued movement of the body A upwardly in the casing C, will cause the lower end of the ring 6| to engage the upper end of the sleeve 50, and as suchmovement between the body A and the casing' C continues, sleeye. 50 will be moved or forced downwardly operating the arms 43 out of t-he parts 45 of the body openings.

'I he control provided by the present invention being employed in connection with a well cleaner as above described, openings are provided to admit fluid or material from the well into the device. In the form of construction illustrated, suitable inlet openings are provided inthe body A of the control, as clearly illustrated in Fig; 2 of the drawings. When the parts of the control are formed and related as hereinabove described, itis advantageous to form the body A of two sections as shown throughout the drawings. Referring particularly to Fig. 2 of the drawings, it will be apparent how the body A is formed by an inner tubular section 90, which, extends throughout the entire length of the control, and an outer section 9| which fits over the section 90, and extends upwardly from the lower end of the control to the packer 25, where its upper end forms the shoulder 26. The body openings, which receive the pins 43, and the openings 80 are formed through both the body sections and 9|. The pins 54 which guide the sleeve 50 and limit its longitudinal movement on the body A extend between and connect the two sections 90 andA 9| of the body.

From the foregoing description it is believed that the operation of the device will be fully and accurately understood. As the tool or cleaner, together with the control, is lowered into the well, for instance downwardly in the well casing C, the various parts are related and positioned as illustrated throughout the drawings. When the assembly, including the gripping parts 5|, resists such movement, and due to the frictional engagement between the members 5| and-the inner wall of the casing C, it remains fixed in the casing as the other parts of the tool move upwardly. In thecommencement of such operation the latch 'l0 is rst released and then the ring orabutment 6| engages the upper end of the sleeve 50. As the operation continues the sleeve 50 is engaged and then moved by the ring 6|, during which operation the arms 4,3 are moved out of the lateral parts 45 of the body openings into the vertical parts 44 f the body openings. Immediately upon the arms 43 moving into register with the vertical parts 44 of the body openings the spring 92 operates to move the rod 34 upwardly in the body A so that the punch 35 is moved into engagement with the closure disc |9 to rupture it. Communication is thus established between the interior of the body I0 and the well casing through the body A and the openings 80 in the body A. The body A having been introduced into the well empty and sealed by means of the closure I9 the hydrostatic head of fluid in the casing C will 'cause uid and material from the casing C, and more specifically the iluid from below the packer 25. to enter and fill body l0 until the pressures inside and outside of the body are equalized.v The check valve |4 then operates to close the lower end of the body I0. ,and thus traps a body of fluid or material in the body l0 to be withdrawn from the well with the tool.

When the tool reaches the top of the well or has I skilled in the art and fall Within the scope of the claims.

Having described our invention, we claim:

l. A control for a well tool having a body and an element carried by the body and actuatable to operate the tool, said control embodying an operating memberl supported by and shiftable with relation to the body to actuate said element, holding means normally holding the operating member from shifting, said holding means including a'member movable to a position releasing the operating member, a releasing member carried by and movable with respect to the body and said holding means, and means for moving the releasing member, 'said releasing member having cam-engagement with said movable holding member during movement of the releasing member in a predetermined direction relative to the body and being thereby operative to move said movable holding member to release position.

2. A control for a well tool having va body and an element carried by the body and actuatable to operate the tool; said control embodying an operating member supported by and shiftable with relation to the body to actuate said element, means tending to shift said member, holding means normally holding the operating member from shifting, said holding means including a member movable to a position releasing the operand movable with respect to the body and said holding means, and means for moving the releasing member, said releasing member having cam-engagement with said movable holding member, during movement of the releasing member in a predetermined direction relative to the body and being thereby operative to move said movable holding member to release position.

3. A control for a well tool having a body and an element carried by the body and actuatable to operate the tool, said control embodying an operating member supported by and shiftable axially of the body to actuate said element, holding means normally holding the operating member from shifting, said holding means including a member movable transversely of the body to a position releasing the operating member, a releasing member movable axially of the body and with respect to said holding means, and means for moving '.the releasing member, said releasing member having cam-engagement with said movable holding member during movement of the releasing member in-a predetermined direction relative to the body and being thereby operative to move said movable holding member to release position.

4. A control for a well tool having a body and an element carried -by the bodyand actuatable to operate the tool, said control embodying an operating member supported by and shiftable with relation to the body to actuate said element, holding means normally holding the operating member from shifting, said holding means including a member movable to a position releasing l the operating member, a releasingmember embodying `a sleeve on the exterior of the body and movable with respect to the body and said holding means, and means for moving the releasing member, said releasing member having cam-engagement with said movable holding member during movement of the releasing member in a predetermined direction relative to the body and being thereby operative to move said movable holding member to release position.

5. A control for a well tool having a body and an element carried by the body and actuatable to operate the tool, said control embodying an operating member supported by and shiftable with relation to the body to actuate said element, holding means normally holding the operating member from shifting, said holding means including a member movable to a position releasing-the operating member, a releasing member carriedby and movable with respect to the body and said holding means, means for moving the releasing member, said releasing member havingV rection, said abutment member having an elel mentconnected thereto and adapted to engage a Well casing.

6. A control for a well tool having a body and an element carried by the body and actuatable to operate the tool, said control embodying an -operating member supported by and shiftable with relation to the body to actuate said element, holding means normally holding the operating member from shifting, said holding means including a member movable to a position releasing Y*the operating member, a releasing member carried by and movable with respect to the body and said holding means, means for moving the releasing member, said releasing member having cam-engagement with said movable holding member during movement of the releasing member in a predetermined direction relative to the body and being thereby operative to move said movable holding member to release position, an abutment member carried by and movable longitudinally of the body and engageable with the releasing member when the abutment member is moved with relation to the body in one direction, and means releasably holding said abutment member spaced longitudinally of the body from said releasing member and against movement in said one direction.

'7. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an operating member shiftable in one direction with relation to the body to actuate said element and tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably l holding the member against shifting in that direction and including a projection oi said member cooperating with an opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and a lateral part presenting a shoulder adap'ted to hold the projection against suchmovement, a releasing member shiftably carried by the body and engageable with said projection, said last named member being operative by virtue of shifting movement iny one direction to move said projection from the lateral part of lthe opening to the longitudinal part thereof, and means for so shifting the last named member.

' 8. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an operating member shiftable in one direction with relation to the body to actuate said element and tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably holding the member against shifting in that direction and including a projection on said member cooperating with an opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and a lateral part presenting a shoulder adapted to hold the projection against `such movement,

. a. releasing member shiftably carried by the body and connected with the holding means to release said operating member upon being shifted in a predetermined direction relative to the body, and means whereby said releasing member is shifted upon predetermined movement of the body in the well.

9. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an loperating member shiftable in one direction with relation to the body to actuate said element and tending normally to shift in that direction'when the tool is lowered into a well, holding means normally releasably holding the member against shifting in that direction and including a projection on said member cooperating with an opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral part of the opening and including a part shiftable longitudinally of the body and having an angularly disposed shoulder engaging the proin one direction with relation to the body to actuate said elementand tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably holding the member against shiftingl in that direction and in.-

cluding a projection on said member cooperating with an opening inthe body which opening has a longitudinal part to allow shifting of the projection in said one,direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral part of thev opening and including a sleeve shiftable longitudinally of the body and having an angularly disposed opening receiving the projection, and means whereby the sleeve is shifted upon predetermined movement of the body in the well.

11. A control for a. well tool having a body and an element actuatable tooperate the tool, said control embodying an operating memb r shiftable in one direction with relation to the ody to actuate said element and tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably holding the member against shifting in that direction and including a projection on said member cooperating (with an opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and'means for moving the projection out of the lateral part of the opening and including a part shitable longitudinally of the body and having an angularly disposed shoulder engaging the projection, and means whereby said last mentioned part is shifted upon predetermined movement of the body in the well, said last named means emv control embodying an operating member shiftable in one direction with relation to the body to actuate said element and tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably holding the member against shiftingin that direction and including a projection on said member cooperating with an opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral part of the opening and including a sleeve shiftable longitudinally of the body and having an angularly `disposedopening receiving the projection, and

'Ivo

means whereby the sleeve is shifted upon predetermined movement of the body in the well, said last named means embodying an element adapted to engage a well casing and to coact with the sleeve when the body is given the predetermined movement.

13. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an operating member. shiftable in one dire'ction with relation to the body to actuate said element and tending normally to shift in that direction when the tool is lowered. into a well, holding means normally releasably .holding the member against shifting in that di-` rection and including a projection on said member cooperating with an opening in the body which opening has a longitudinal part to 4allow shifting of the projection in said one direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral part-of the opening and including a sleeve shiftable longitudinally of the body and having an angularly disposed opening receiving the projection, and means whereby the sleeve is shifted upon predetermined movement of thebody in the well, said last named means embodying an element adapted to engagea well casing and to c'oact with the sleeve when the body is given the predetermined movement; said element being out of c oacting relation with the sleeve until the body has been so moved a predetermined extent.

14. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an operating member mally to shift in that direction when the tool is lowered into a well, holding .means normally releasably holding the member against shifting in that direction and including a projection on said member cooperating with an. opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral part of the opening and including a sleeve shiftable longitudinally of the body and having an angularly disposed opening receiving the projection, and means whereby the sleeve is shifted upon predetermined movement 'of the body in the well, said last named means embodying an assembly slidably 'mounted on the body for movement with relation to and into engagement with the sleeve when the body is given such predetermined movement, said assembly including an element adapted to engage a well casing.

15. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an operating member shiftable in one direction with relation to the body to actuate said element and tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably holding the member against shifting in that direction andincluding a projection onv said member cooperating withan opening in the body which opening has a longitudinal part to allow shifting yof the projectionin said one direction and a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral part of the opening andineluding a sleeve shiftable longitudinally ,-oi' the body and having an angularly disposed opening receiving the projection, means .hlding the sleeve against rotation on the body, and means whereby the sleeve is shifted longitudinallywith respect to the body upon predetermined movement of the body in the well.

16. A control for a well tool having a body and an element actuatable to operate the tool, said control embodying an. operating member shiftable in one direction with relation to the body to actuate said element and tending normally to shift in that direction when the tool is lowered into a well, holding means normally releasably holding the member against shifting in that direction and including a projection on said member cooperating with an opening in the body which opening has a longitudinal part to allow shifting of the projection in said one direction and. a lateral part presenting a shoulder adapted to hold the projection against such movement, and means for moving the projection out of the lateral `part of the opening and including 'a sleeve shiftable longitudinally of the body andhaving an angularly disposed opening receiving the projection, a bearing sleeve on the projection and engaging the Walls of the body and sleeve openings, and means whereby the sleeve is shifted upon predetermined movement of the body in the well` v1'?. In combination with a well tool including a body having a charge-receiving chamber with 'an inlet, and a closure adapted normally to close the inlet; an operating member shiftable with relation to the body to open the inlet, holding means normally holding the operating member from shifting, a releasing member movable with respect to the body and said holding means, and means for moving the releasing member; said releasing member beingf operable upon movement in a predetermined direction relative to the body to release the operating member..

18. In combination with a well tool including a body having a charge-receiving chamber with an inlet, there being an opening in the body opening to the exterior thereof and in communication with said inlet, a. packer on the body above said opening, and there being a circulation duct in the body opening to the exterior of the body at points above and below the packer when the inlet is closed, and a closure adapted normally to close the inlet; an operating member shiftable with relation to the body to open the inlet, holding means normally holding the operating member from shifting, a releasing member movable with respect to the body and said holding means, and means for moving the re leasing member; said releasing member being operable upon movement in a predetermined direction relative to the body to release the operating member.

19. A control for a well tool including a tubular body, an operating member within the bore of the body and shiftable, for its operation, relative to the body, holding means normally holding the member against operative shift and embodying a pair of cooperating elements, one on the body and one on the operating member, anda releasing member shiftably mounted on the outside of the body and relatively movable with both said cooperating elements, said vrespect to releasing member cooperating with one of said elements in a'manner --to move it and thereby release said operating member upon shifting of said releasing member in a predetermined direction relative to the body.

20. A control for a well tool including a tubular body, an operating member within the bore of the body and shiftable, for its operation, longitudinally of the body, holding means normally holding the member against operative shift and embodying a pair of cooperating elements, one

on the body and one on the operating member, anda releasing member longitudinally shiftable on the outside of the body and relatively movable with respect to both said cooperating elements, said releasing member cooperating with one of said elements in a manner to move it and thereby release said operating member upon shifting of said releasing member in a given direction longitudinally .of the body.

21. A control for a well tool including a tubular body, an operating member within the bore of the body and shiftable, for its operation,'rela tive to the body, means tendingnormally to shift the operating member, holding means normally holding the member against operative shift and embodying a pair of cooperating elements, one on the body and one on the operating member,

the outside of the body and relatively movable with respect to both said cooperating elements, said releasing member cooperating4 with one of said elements in a manner to move it and thereby release said operating member upon shifting of said releasing member in a predetermined direction relative to the body.

and a releasing member shiftably mounted on 22. In combination with a well tool including a body adapted to be lowered through a well and having a charge-receiving chamber with an inlet and a closure adapted normally to closethe inlet; an operating member shiftable with relatic-n to the body to open the inlet, holding means normally holding the operating member from shift-ing, a releasing member movable with respect to the body and said holding means, and means for moving the releasing'member, said releasing member being operable by virtue of withdrawal movement of the body to release the operating member.

' 23. A control for a well tool having a body and an element actuatable to operate the tool,said

, control embodying an operating member shiftable relative to the body to actuate said element,.hold ing means normally releasably holding the member against operation, release means for disengaging the holding means to release the operating member for operation, said .release means including a member shiftable longitudinally on the body, an assembly carried on the/body and .movable at times on the body for shifting the last named member, vthe assembly including an element adapted 'to engage a well casing. and releasable means normally holding the assembly from moving `on the body in a manner to shift said last named member. v

24. A control for a well tool havingrr a body and an element actuatable to operate the tool. said control embodying an operating member shiftable relative to the body to actuate said element, holding means normally releasably holding lthe member against operation, release means for disengaging the holding means to release the operating member for operation, said release means ber against operation, release means for disengaging the holding means to release the operating member for operation, said release means including a sleeve shiftable longitudinally on the body, an assembly carried on the body and movable at times on the body for shifting the last named member, the assembly including a second sleeve slidable, at times, on the body, an element on 'the second sleeve and adapted to engage a well said transverse element, and a member movable longitudinally of the body and having a spiral cam-shoulder engaging the transverse element.

27. A control for a well tool having a body and an element actuatable to operate the tool,l said'.

control embodying a member supported by and longitudinally and rotatably movable with respect to the body, said -member being adapted, by virtue of its movement, to actuate said element, a second element extending transversely from the member, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said transverse element, and an exterior sleeve on and movable longitudinally of the body and having aspiral cam-shoulder engaging the transmember movable longltudinally of the body and verse element.

28. A control for a well tool having a body and an element actuatable to operate the tool,y said control embodying a member supported by and longitudinally and rotatably movable with respect to the body, said member being adapted, by virtue of its movement, .to actuate said element, a second element extending transversely from the member, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said transverse element, a second member movable longitudinally of the body and having a spiral cam-shoulder engaging the transverse element, and an abutment member movable long/itudinally of the body and engageable with said second mentioned member when the abutment member is moved With relation to the body, and an element adapted to coact with the abutment member and to engage a Well casing. A y

2,9. A controlfor a Well tool having a chargereceiving chamberwith an inlet and an element actuatable to control fluid-flow through said inlet,

said control embodying a member operable to actuate said element and longitudinally and rotatably movable with respect to the body, a pin extending from the member, a shoulder on the body andV extending transversely thereof, said shoulder being adapted to engage said pin, and a member movable longitudinally of the body and having a spiral cam-shoulder engaging the pin.

30. A control for a'well tool having a chargereceiving chamber with an inlet and an element actuatable to control fluid-flow through said inlet, said control embodying a member operable to actuate said element and longitudinally and rotatably movable with respect to the body, `a pin ,extending .from the member, ashoulder on the member movable longitudinally of the body and having aspiral cam-shoulder engaging the pin, and means carried by the body and coactible with the last namedmember and adapted to engage a well casing.

31. A control for a\well tool having'a chargereceiving chamber Withi` an inlet and an element aotuatable to control fluid-flow through said inlet, said control embodying a member operable to actuate said element andlongitudinally and rotatably movable with respect to the body, a pin extending from the member, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said pin, a member movable longitudinally of the body and having a spiral cam-shoulder engaging the pin, and an abutment member movable longitudinally of the body Aand engageable with the last named member'when the abutment member is moved with relation to the body, said abutment member having a gripping element connected thereto and adapted to engage a Well'casing. 32. A control for a well tool having a body and r an element supported by the body and actuatable to operate the tool, said control embodying a member supported by and longitudinally and rotatably movable with respect to the body, said member being adapted, by virtue of its longitudinal movement in one direction, to actuate said element and normally tending to move in that direction, an element extending transversely from the member, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said transverse element releasably to hold the iirst mentioned member agalnst movement in said one direction, and a having a spiral cam-shoulder engaging the transverse element, said cam-shoulder being adapted to move the transverse element from the transverse shoulder when the last named member is moved in one' direction longitudinally of the body.

33. A control for a well tool having a body and an element supported by the body and actuatable to operate the tool, said'control embodying a member supported by and longitudinally and rotatably movable with respect to the body, said member being adapted, by virtue of its longitudinal movement in one direction, to actuate said element, means normally tending to move said member in that direction, an element extending transversely from the member, a. shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said transverse element releasably to hold the rst mentioned member against movement in said one direction, and a member movable longitudinally of the body and having a spiral cam-shoulderl engagingthe transverse element, said cam-shoulder being adapted to move the transverse element fromthe transverse shoulder when the last named'member is moved in one direction longitudinally of the body.

34. A control for a well tool having a body and an element supported by the body and 'actuatable to operate the tool, said control embodying a member supported by and longitudinally and rotatably movable with respect'to the body, an element extending transversely fromy the member, a shoulder on the body and extending transversely thereof, and a member movabledongitudinally of the body and having a spiral cam-shoulder engaging one side of the transverse element and an verse element.

gaging one side of the transverse element and a parallel opposingshoulder at the other side of the transverse element.

36.111. combination with a well toolincluding a body having a charge receiving chamber with; an inlet, and an openable closure for the inlet; a

' closure-opening member supported by and longitudinally and rotatably movable with respect to the body, said member being adapted, by virtue of its longitudinal movement, to open the closure an element extending transversely from the mem- ,ber and movable therewith, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said transverse element, and a member movable longitudinally of the body and having a spiral cam-shoulder engaging the transverse element, said last named member being adapted, in its movement with respect to the body and by virtue of its cam-shoulder engagement with said transverse element, to rotate said transverse element along said transverse shoulder.

37.' In combination with a well tool including a body having a charge receiving chamber with an inlet, and an openable closure for the inlet; a closure-opening member supported by and longitudinally and rotatably movable with respect t0 the body, said member being adapted, by virtue of its longitudinal movement, to open the closure, an element extending transversely from the member and movable therewith, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said transverse element, and an exterior sleeve on and movable longitudinally of the body and having a spiral camshculder engaging the transverse element, said sleeve being adapted, in its movement with respect to the body and by virtue of its cam-shoulder engagement with said transverse element, to rotate said transverse element along said transverse shoulder.

38. In combination with' a well a body adapted to be lowered through a well and having a charge receiving chamber with an inlet, and an openable closure for the inlet; a yclosureopening member supported by and longitudinally and rotatably movable with respect to the body, said member being adapted, by virtue of its longitool including y tudinal movement, to open the closure, an element extending transversely from the member and movable therewith, a shoulder on the body adapted, in its movement with respect to the body and by virtue of its cam shoulder engagement with said transverse4 element, to rotate said transverse element along said transverse shoulder, said last named member being so moved with respect to the body by' virtue of Withdrawal movement of the body.

39. A control for a. well tool adapted to be lowered through a well and having a charge-receiving chamber with an inlet and an element actuatable to control fluid-now through said inlet, said control embodying a member operable to actuate said element and longitudinally and rotatably movable with respect to the body, a pin extending from the member, a shoulder on the body and extending transversely thereof, said shoulder being adapted to engage said pin, and a member movable longitudinally of the body and having a spiral cam-shoulder engaging the pin, said last named member being so movable by vir-,. tue of withdrawal movement of the tool.

40. In combination with a well tool including a body adapted to be lowered through a well and having a charge-receiving chamber with an inlet and a closure adapted normally to close the inlet,' an operating member shiftable relative to the body to open the inlet, an assembly on the body and movable at times with respect to the body for controlling the movement of the operating member with respect to the body, and releasable means normally holding the assembly from moving on the body, said holding means being released by virtue .of withdrawal movement of the body. p

41. In combination with a well tool including a body adapted to be lowered through a well and having a charge-receiving chamber with an inlet and a closure adapted normally to close the inlet, an operating member shiftable relative to the body to open the inlet, an assembly on the body and mbvable at times with respect to the body for controlling the movement of the operating member with respect to the body, and releasable resilientmeans normally holding the assembly `from moving on the body, said holding means being released by virtue of withdrawal movement of the body.

-WELDON C. ERWIN.

CEClL H. SWEET. 

